It's your private key, guard it with your life if you put any appreciable amount of money "into" it. If anybody else gets access to that file at any time, they can steal your BTC at any time. Meaning I could copy your wallet.dat now, wait for you to gather a shitton of BTC, and steal everything a year later.

I have one, it just seems yours is much more primitive.BTW, newbies can take your joke for real and actually mail you their wallet for you to help. I don't think anyone would be able to withstand the temptation.